Probability which is based on z score

Reference no: EM13106468

A) A battery manufacturer advertises the average life of its automobile battery is 60 months.what % of batteries should last between 50 and 70 months? The standard deviation is 10 months.

B) If you purchased a battery and it lasted only 23 months, would the life of your battery be considered an outlier?

Reference no: EM13106468

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